body {
    font-family: Arial, Trebuchet MS, sans-serif;
}
#navigation{
    float: left;
    width: 100%;
    padding-bottom: 20px;
    border-bottom: 1px solid #000000;
    padding-top: 20px;
    border-top: 1px solid #000000;    
}
#navigation li {
    float: left;
    width: 200px;
}